Somewhat of a noob question

Ok so whenever I try to find out how big my personal Guild Wars 2 file is (due to many people having different sizes for their files), I can't seem to find out the correct answer. All I can see is how big the actual folder(s) are, which are only in the MB's and KB's. Is there is an easy way to find out how big the game is on my computer without having to redownload everything?